Ruger 31139: The Ruger 10/22 Carbine features a 18.50" cold hammer-forged barrel that is locked into the receiver by a two screw V-block system. It features a factory-installed combination scope base adapter for both Weaver-style and .22 tip-off scope mounts. It has a grey synthetic stock, satin black finish, and weighs in at about 4.5 pounds. The safety is a positive, push-button, cross-bolt manual safety, and the polymer trigger housing assembly is made of high-tech material of impact and abrasion resistance among other benefits.